US20210048639A1 - Camera optical lens - Google Patents
Camera optical lens Download PDFInfo
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- US20210048639A1 US20210048639A1 US16/989,913 US202016989913A US2021048639A1 US 20210048639 A1 US20210048639 A1 US 20210048639A1 US 202016989913 A US202016989913 A US 202016989913A US 2021048639 A1 US2021048639 A1 US 2021048639A1
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- camera optical
- image
- optical lens
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/04—Reversed telephoto objectives
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
- G02B3/04—Simple or compound lenses with non-spherical faces with continuous faces that are rotationally symmetrical but deviate from a true sphere, e.g. so called "aspheric" lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/005—Diaphragms
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
- G02B9/60—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having five components only
Definitions
- the present disclosure relates to the field of optical lens, in particular, to a camera optical lens suitable for handheld devices, such as smart phones and digital cameras, and imaging devices, such as monitors or PC lenses.
- a photosensitive device for a camera lens is no more than a charge coupled device (CCD) or a complementary metal-oxide semiconductor sensor (CMOS Sensor).
- CCD charge coupled device
- CMOS Sensor complementary metal-oxide semiconductor sensor
- a mini-lens that is traditionally equipped in a mobile phone camera adopts a three-piece or four-piece and even five-piece or six-piece lens structure.
- a lens as such has good optical functions, the lens is fairly unreasonable in terms of refractive power, distance between lenses and lens shape, rendering that the lens structure with good optical functions can not satisfy a design requirement of large aperture, ultra-thinness and wide angle.
- the present disclosure seeks to provide a camera optical lens that satisfies a design requirement of large aperture, ultra-thinness and wide angle while having good optical functions.
- embodiments of the present disclosure provides a camera optical lens, from an object side to an image side: a first lens having a negative refractive power; an aperture; a second lens having a positive refractive power; a third lens having a negative refractive power; a fourth lens having a positive refractive power; and a fifth lens having a negative refractive power; wherein the camera optical lens satisfies following conditions:
- f denotes a focal length of the camera optical lens
- f1 denotes a focal length of the first lens
- f2 denotes a focal length of the second lens
- d3 denotes an on-axis thickness of the third lens
- d4 denotes an on-axis distance from an image-side surface of the second lens to an object-side surface of the third lens
- d5 denotes an on-axis thickness of the third lens
- d7 denotes an on-axis thickness of the fourth lens
- d8 denotes an on-axis distance from an image-side surface of the fourth lens to an object-side surface of the fifth lens
- R5 denotes a curvature radius of the object-side surface of the third lens.
- the camera optical lens further satisfies the following condition:
- R3 denotes a curvature radius of an object-side surface of the second lens
- R4 denotes a curvature radius of the image-side surface of the second lens
- the camera optical lens further satisfies the following condition:
- f3 denotes a focal length of the third lens
- f5 denotes a focal length of the fifth lens
- the camera optical lens further satisfies the following conditions:
- R1 denotes a curvature radius of an object-side surface of the first lens
- R2 denotes a curvature radius of an image-side surface of the first lens
- d1 denotes an on-axis thickness of the first lens
- TTL denotes a total optical length from the object-side surface of the first lens to an image surface of the camera optical lens along an optical axis.
- the camera optical lens according further satisfies the following conditions:
- TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optical axis.
- the camera optical lens further satisfies the following conditions:
- f3 denotes a focal length of the third lens
- R6 denotes a curvature radius of an image-side surface of the third lens
- TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optical axis.
- the camera optical lens further satisfies following conditions:
- f4 denotes a focal length of the fourth lens
- R7 denotes a curvature radius of an object-side surface of the fourth lens
- R8 denotes a curvature radius of the image-side surface of the fourth lens
- TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optical axis.
- the camera optical lens further satisfies following conditions:
- f5 denotes a focal length of the fifth lens
- R9 denotes a curvature radius of the object-side surface of the fifth lens
- R10 denotes a curvature radius of an image-side surface of the fifth lens
- d9 denotes an on-axis thickness of the fifth lens
- TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optical axis.
- the camera optical lens further satisfies following conditions:
- f12 denotes a combined focal length of the first lens and second lens.
- the camera optical lens further satisfies following conditions:
- TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optical axis
- IH denotes an image height of the camera optical lens
- the camera optical lens in the present disclosure has good optical functions and has characteristics of large aperture, wide angle and ultra-thinness, and is especially fit for WEB camera lenses and mobile phone camera lens assemblies composed by such camera elements as CCD and CMOS for high pixels.
- FIG. 1 is a schematic diagram of a structure of a camera optical lens according to Embodiment 1 of the present disclosure.
- FIG. 2 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 1 .
- FIG. 3 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 1 .
- FIG. 4 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown in FIG. 1 .
- FIG. 5 is a schematic diagram of a structure of a camera optical lens according to Embodiment 2 of the present disclosure.
- FIG. 6 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 5 .
- FIG. 7 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 5 .
- FIG. 8 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown in FIG. 5 .
- FIG. 9 is a schematic diagram of a structure of a camera optical lens according to Embodiment 3 of the present disclosure.
- FIG. 10 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 9 .
- FIG. 11 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 9 .
- FIG. 12 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown in FIG. 9 .
- the present disclosure provides a camera optical lens 10 of Embodiment 1 of the present disclosure.
- a left side is an object side
- a right side is an image side.
- the camera optical lens 10 includes five lenses arranged coaxially, from the object side to the image side: a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5.
- An aperture S1 is provided at an object side of the second lens L2, and such optical element as an optical filter GF is provided between the fifth lens L5 and an image surface Si.
- the first lens L1 has a negative refractive power
- the second lens L2 has a positive refractive power
- the third lens L3 has a negative refractive power
- the fourth lens L4 has a positive refractive power
- the fifth lens L5 has a negative refractive power.
- a focal length of the camera optical lens 10 is defined as f
- a focal length of the first lens L1 is defined as f1
- a focal length of the second lens L2 is defined as f2
- an on-axis thickness of the second lens L2 is defined as d3
- an on-axis distance from an image-side surface of the second lens L2 to an object-side surface of the third lens L3 is defined as d4
- an on-axis thickness of the third lens L3 is defined as d5
- an on-axis thickness of the fourth lens L4 is defined as d7
- an on-axis distance from an image-side surface of the fourth lens L4 to an object-side surface of the fifth lens L5 is defined as d8
- a curvature radius of the object-side surface of the third lens L3 is defined as R5.
- f, f1, f2, d3, d4, d5, d7, d8 and R5 satisfy the following conditions:
- condition (1) specifies a ratio between a sum of focal lengths of the first lens L1 and second lens L2 and the focal length of the camera optical lens 10 .
- a spherical aberration and field curvature quantity of the camera optical lens 10 may be effectively balanced.
- Condition (2) specifies a ratio between the on-axis thickness of the second lens L2 and the on-axis distance from the image-side surface of the second lens L2 to the object-side surface of the third lens L3. Within the range specified by condition (2), it helps shortening a total optical length from an object-side surface of the first lens L1 to an image surface of the camera optical lens 10 along an optical axis, thereby an ultra-thinness effect is realized.
- Condition (3) specifies a ratio between the curvature radius of the object-side surface of the third lens L3 and the on-axis thickness of the third lens L3, within a range of which it helps improving functions of the camera optical lens 10 .
- Condition (4) specifies a ratio between the on-axis thickness of the fourth lens L4 and the on-axis distance from the image-side surface of the fourth lens L4 to the object-side surface of the fifth lens L5, within a range of which it helps shortening a total optical length from the object-side surface of the first lens L1 to the image surface of the camera optical lens 10 along the optical axis, thereby an ultra-thinness effect is realized.
- a curvature radius of the object-side surface of the second lens L2 is defined as R3
- a curvature radius of the image-side surface of the second lens L2 is defined as R4
- the camera optical lens 10 satisfies the following condition:
- Condition (5) specifies a shape of the second lens L2, within a range of which it helps soften refraction of light that passes through the lens, thereby effectively reducing aberration.
- a focal length of the third lens L3 is defined as f3
- a focal length of the fifth lens L5 is defined as f5
- f, f1, f3 and f5 satisfy the following condition:
- Condition (6) specifies a ratio between a sum of focal lengths of the first lens L1, third lens L3 and fifth lens L5 and the focal length of the camera optical lens 10 . Within the range specified by condition (6), the camera optical lens 10 has better imaging quality and lower sensitivity.
- a curvature radius of the object-side surface of the first lens L1 is defined as R1
- a curvature radius of the image-side surface of the first lens L1 is defined as R2
- an on-axis thickness of the first lens L1 is defined as d1
- a total optical length from the object-side surface of the first lens L1 to the image surface Si of the camera optical lens 10 along the optical axis is defined as TTL
- f1, f, R1, R2, d1 and TTL satisfy the following conditions:
- condition (7) specifies a ratio between the focal length of the first lens L1 and the focal length of the camera optical lens 10 , within a range of which the first lens L1 has an appropriate negative refractive power that helps reducing aberration of the camera optical lens 10 while facilitating a development of the camera optical lens 10 towards ultra-thin and wide-angle lens.
- Condition (8) specifies a shape of the first lens L1, within a range of which the shape of the first lens L1 is reasonably controlled and it enables the first lens L1 to effectively correct the spherical aberration of the camera optical lens 10 .
- Condition (9) specifies a ratio between the on-axis thickness of the first lens L1 and the total optical length from the object-side surface of the first lens L1 to the image surface Si of the camera optical lens 10 along the optical axis, within a range of which it helps realizing ultra-thinness.
- f2, f, d3 and TTL further satisfy the following conditions:
- Condition (10) specifies a ratio between the focal length of the second lens L2 and the focal length of the camera optical lens 10 , within a range of which and by controlling a positive refractive power of the second lens L2 within a reasonable scope, it helps correct the aberration of the camera optical lens 10 .
- Condition (11) specifies a ratio between the on-axis thickness of the second lens L2 and the total optical length from the object-side surface of the first lens L1 to the image surface Si of the camera optical lens 10 along the optical axis, which facilitates realizing ultra-thinness.
- a curvature radius of an image-side surface of the third lens L3 is defined as R6, and f3, f, R5, R6, d5 and TTL satisfy the following conditions:
- condition (12) specifies a ratio between the focal length of the third lens L3 and the focal length of the camera optical lens 10 , within a range of which and through reasonable distribution in refractive power the camera optical lens 10 has better imaging quality and lower sensitivity.
- Condition (13) specifies a shape of the third lens L3, within a range of which it helps soften refraction of light that passes through the lens, thereby effectively reducing aberration.
- Condition (14) specifies a ratio between the on-axis thickness of the third lens L3 and the total optical length from the object-side surface of the first lens L 1 to the image surface Si of the camera optical lens 10 along the optical axis, within a range of which it helps facilitating realizing ultra-thinness.
- a focal length of the fourth lens L4 is defined as f4
- a curvature radius of an object-side surface of the fourth lens L4 is defined as R7
- a curvature radius of the image-side surface of the fourth lens L4 is defined as R8, and f4, f, R7, R8, d7 and TTL satisfy the following conditions:
- condition (15) specifies a ratio between the focal length of the fourth lens L4 and the focal length of the camera optical lens 10 , within a range of which it helps improving functions of the camera optical lens 10 .
- Condition (16) specifies a shape of the fourth lens L4, within a range of which it helps correct such problem as off-axis aberration with the development towards ultra-thin and wide-angle lens.
- Condition (17) specifies a ratio between the on-axis thickness of the fourth lens L4 and the total optical length from the object-side surface of the first lens L1 to the image surface Si of the camera optical lens 10 along the optical axis, within a range of which it helps realizing ultra-thinness.
- a curvature radius of the object-side surface of the fifth lens L5 is defined as R9
- a curvature radius of an image-side surface of the fifth lens L5 is defined as R10
- an on-axis thickness of the fifth lens L5 is defined as d9
- f5, f, R9, R10, d9 and TTL satisfy the following conditions:
- Condition (18) specifies a ratio between the focal length of the fifth lens L5 and the focal length of the camera optical lens 10 , which effectively makes a light angle of the camera optical lens 10 more even, thereby reducing tolerance sensitivity.
- Condition (19) specifies a shape of the fifth lens L5, within a range of which it helps correct such problem as off-axis aberration with the development towards ultra-thin and wide-angle lens.
- Condition (20) specifies a ratio between the on-axis thickness of the fifth lens L5 and the total optical length from the object-side surface of the first lens L 1 to the image surface Si of the camera optical lens 10 along the optical axis, within a range of which it helps realizing ultra-thinness.
- a combined focal length of the first lens L1 and second lens L2 of the camera optical lens 10 is defined as f12, and f12 and f satisfy the following condition:
- condition (21) it removes such problems as aberration and distortion of the camera optical lens 10 , limits a rear focal length of the camera optical length 10 , and maintains miniaturization of a lens group of the camera optical lens 10 .
- the camera optical lens 10 may have good optical functions and may satisfy the design requirement of large aperture, wide angle and ultra-thinness. According to the characteristics of the camera optical lens 10 , the camera optical lens 10 is especially fit for WEB camera lenses and mobile phone camera lens assemblies composed by such camera elements as CCD and CMOS for high pixels.
- TTL/IH ⁇ 2.30 and FOV ⁇ 119.00.
- TTL is a total optical length from the object-side surface of the first lens L1 to the image surface Si of the camera optical lens 10 along the optical axis
- IH is an image height of the camera optical lens 10
- FOV is a field of view.
- the camera optical lens 10 has good optical imaging functions while meeting design requirements of wide angle and ultra-thinness.
- inflexion points and/or arrest points can be arranged on the object-side surface and/or the image-side surface of the lens, so as to satisfy the demand for high quality imaging.
- inflexion points and/or arrest points can be arranged on the object-side surface and/or the image-side surface of the lens, so as to satisfy the demand for high quality imaging.
- the description below can be referred for specific implementations.
- FIG. 1 is a schematic diagram of a structure of the camera optical lens 10 according to Embodiment 1 of the present disclosure.
- the design data of the camera optical lens 10 illustrated in FIG. 1 are shown in the following.
- Table 1 lists object-side and image-side curvature radiuses R, on-axis thicknesses of lenses, distance d between lenses, refraction indexes nd and abbe numbers vd of the first to fifth lenses L1 to L5 that form the camera optical lens 10 in Embodiment 1 of the present disclosure.
- R curvature radius of an optical surface
- R1 curvature radius of the object-side surface of the first lens L1;
- R2 curvature radius of the image-side surface of the first lens L1;
- R3 curvature radius of the object-side surface of the second lens L2;
- R4 curvature radius of the image-side surface of the second lens L2;
- R5 curvature radius of the object-side surface of the third lens L3;
- R6 curvature radius of the image-side surface of the third lens L3;
- R7 curvature radius of the object-side surface of the fourth lens L4;
- R8 curvature radius of the image-side surface of the fourth lens L4;
- R9 curvature radius of the object-side surface of the fifth lens L5;
- R10 curvature radius of the image-side surface of the fifth lens L5;
- R11 curvature radius of the object-side surface of the optical filter GF
- R12 curvature radius of the image-side surface of the optical filter GF
- d on-axis thickness of a lens or on-axis distance between lenses
- d2 on-axis distance from the image-side surface of the first lens L1 to the object-side surface of the second lens L2;
- d10 on-axis distance from the image-side surface of the fifth lens L5 to the object-side surface of the sixth lens L6;
- d11 on-axis thickness of the optical filter GF
- nd refractive index of the d line
- nd1 refractive index of the d line of the first lens L1;
- nd2 refractive index of the d line of the second lens L2;
- nd3 refractive index of the d line of the third lens L3;
- nd4 refractive index of the d line of the fourth lens L4;
- nd5 refractive index of the d line of the fifth lens L5;
- ndg refractive index of the d line of the optical filter GF
- vg abbe number of the optical filter GF.
- k is a conic coefficient
- A4, A6, A8, A10, A12, A14, A16, A18 and A20 are aspheric surface coefficients.
- an aspheric surface of each lens surface uses the aspheric surfaces shown in the above formula.
- the present disclosure is not limited to the aspherical polynomials form shown in the formula.
- Table 3 and Table 4 show design data of inflexion points and arrest points of the camera optical lens 10 according to Embodiment 1 of the present disclosure.
- P1R1 and P1R2 represent the object-side surface and the image-side surface of the first lens L1
- P2R1 and P2R2 represent the object-side surface and the image-side surface of the second lens L2
- P3R1 and P3R2 represent the object-side surface and the image-side surface of the third lens L3
- P4R1 and P4R2 represent the object-side surface and the image-side surface of the fourth lens L4
- P5R1 and P5R2 represent the object-side surface and the image-side surface of the fifth lens L5.
- inflexion point position refers to vertical distances from inflexion points arranged on each lens surface to the optic axis of the camera optical lens 10 .
- arrest point position refers to vertical distances from arrest points arranged on each lens surface to the optical axis of the camera optical lens 10 .
- Table 13 in the following shows values corresponding to conditions in Embodiment 1.
- FIG. 2 and FIG. 3 illustrate a longitudinal aberration and a lateral color with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm after passing the camera optical lens 10 , respectively.
- FIG. 4 illustrates a field curvature and a distortion with a wavelength of 555 nm after passing the camera optical lens 10 .
- a field curvature S in FIG. 4 is a field curvature in a sagittal direction, and T is a field curvature in a tangential direction.
- an image height of the camera optical lens 10 is IH
- a field of view is FOV
- an entrance pupil diameter is ENPD.
- IH 1.815 mm
- a FOV in a diagonal direction is 119.40°
- FOV 119.40°
- ENPD 0.650.
- the camera optical lens 10 is characterized by large aperture, ultra-thinness and wide angle, and has excellent imaging functions.
- FIG. 5 is a schematic diagram of a structure of a camera optical lens 20 according to Embodiment 2 of the present disclosure.
- Embodiment 2 is basically the same as Embodiment 1. Symbols in the following tables having the same meanings as those in Embodiment 1, which is not repeated, but only differences therebetween will be described in the following.
- Table 5 and Table 6 show design data of a camera optical lens 20 in Embodiment 2 of the present disclosure.
- Table 7 and table 8 show design data of inflexion points and arrest points of each lens of the camera optical lens 20 lens.
- Table 13 in the following shows values corresponding to conditions in Embodiment 2.
- FIG. 6 and FIG. 7 illustrate a longitudinal aberration and a lateral color of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm after passing the camera optical lens 20 .
- FIG. 8 illustrates a field curvature and a distortion of light with a wavelength of 555 nm after passing the camera optical lens 20 .
- a field curvature S in FIG. 8 is a field curvature in a sagittal direction, and T is a field curvature in a tangential direction.
- an image height of the camera optical lens 20 is IH
- a field of view is FOV
- an entrance pupil diameter is ENPD.
- IH 1.815 mm
- a FOV in a diagonal direction is 120.00°
- i.e., FOV 120.00°
- ENPD 0.654.
- the camera optical lens 20 is characterized by large aperture, ultra-thinness and wide angle, and has excellent imaging functions.
- FIG. 9 is a schematic diagram of a structure of a camera optical lens 30 according to Embodiment 3 of the present disclosure.
- Embodiment 3 is basically the same as Embodiment 1. Symbols in the following tables having the same meanings as those in Embodiment 1, which is not repeated, but only differences therebetween will be described in the following.
- Table 9 and Table 10 show design data of a camera optical lens 30 in Embodiment 2 of the present disclosure.
- Table 11 and Table 12 show design data inflexion points and arrest points of the respective lenses in the camera optical lens 30 .
- Table 13 in the following shows values corresponding to conditions in Embodiment 3.
- FIG. 10 and FIG. 11 illustrate a longitudinal aberration and a lateral color of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm after passing the camera optical lens 30 .
- FIG. 12 illustrates a field curvature and a distortion of light with a wavelength of 555 nm after passing the camera optical lens 30 .
- a field curvature S in FIG. 12 is a field curvature in a sagittal direction, and T is a field curvature in a tangential direction.
- an image height of the camera optical lens 30 is IH
- a field of view is FOV
- an entrance pupil diameter is ENPD.
- IH 1.815 mm
- a FOV in a diagonal direction is 119.80°
- FOV 119.80°
- ENPD 0.643.
- the camera optical lens 30 is characterized by large aperture, ultra-thinness and wide angle, and has excellent imaging functions.
- Table 13 in the following lists equivalent parameters in Embodiment 1, Embodiment 2 and Embodiment 3 in accordance with the above conditions and values of conditions (1), (2), (3) and (4).
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Abstract
Description
- The present disclosure relates to the field of optical lens, in particular, to a camera optical lens suitable for handheld devices, such as smart phones and digital cameras, and imaging devices, such as monitors or PC lenses.
- In recent years, as smart phones are becoming popular, there is an increasing requirement for miniaturized camera lenses. However, generally speaking, a photosensitive device for a camera lens is no more than a charge coupled device (CCD) or a complementary metal-oxide semiconductor sensor (CMOS Sensor). Besides, thanks to development to semiconductor manufacturing processes, a pixel size of the photosensitive device are getting smaller, in addition to the current development trend of electronic products going towards better functions and thinner and smaller dimensions, miniature camera lenses with good imaging quality is becoming a mainstream in the market.
- In order to obtain better imaging quality, a mini-lens that is traditionally equipped in a mobile phone camera adopts a three-piece or four-piece and even five-piece or six-piece lens structure. However, as technology develops and user's requirements are more and more diversified, in a case that a pixel area of the photosensitive device is reducing while a requirement on imaging quality is increasing, though a lens as such has good optical functions, the lens is fairly unreasonable in terms of refractive power, distance between lenses and lens shape, rendering that the lens structure with good optical functions can not satisfy a design requirement of large aperture, ultra-thinness and wide angle.
- To address the above issues, the present disclosure seeks to provide a camera optical lens that satisfies a design requirement of large aperture, ultra-thinness and wide angle while having good optical functions.
- In order to address the above issues, embodiments of the present disclosure provides a camera optical lens, from an object side to an image side: a first lens having a negative refractive power; an aperture; a second lens having a positive refractive power; a third lens having a negative refractive power; a fourth lens having a positive refractive power; and a fifth lens having a negative refractive power; wherein the camera optical lens satisfies following conditions:
-
−1.00≤(f1+f2)/f≤−0.10; -
12.00≤d3/d4≤20.00; -
5.00≤R5/d5≤11.00; and -
8.00≤d7/d8≤14.00; - where f denotes a focal length of the camera optical lens, f1 denotes a focal length of the first lens, f2 denotes a focal length of the second lens, d3 denotes an on-axis thickness of the third lens, d4 denotes an on-axis distance from an image-side surface of the second lens to an object-side surface of the third lens, d5 denotes an on-axis thickness of the third lens, d7 denotes an on-axis thickness of the fourth lens, d8 denotes an on-axis distance from an image-side surface of the fourth lens to an object-side surface of the fifth lens, and R5 denotes a curvature radius of the object-side surface of the third lens.
- As an improvement, the camera optical lens further satisfies the following condition:
-
0.05≤(R3+R4)/(R3−R4)≤0.50; - where R3 denotes a curvature radius of an object-side surface of the second lens, and R4 denotes a curvature radius of the image-side surface of the second lens.
- As an improvement, the camera optical lens further satisfies the following condition:
-
−9.00≤(f1+f3+f5)/f≤−6.50; - where f3 denotes a focal length of the third lens, and f5 denotes a focal length of the fifth lens.
- As an improvement, the camera optical lens further satisfies the following conditions:
-
−3.71≤f1/f≤−0.76; -
−0.03≤(R1+R2)/(R1−R2)≤0.67; -
0.03≤d1/TTL≤0.11; - where R1 denotes a curvature radius of an object-side surface of the first lens, R2 denotes a curvature radius of an image-side surface of the first lens, d1 denotes an on-axis thickness of the first lens, and TTL denotes a total optical length from the object-side surface of the first lens to an image surface of the camera optical lens along an optical axis.
- As an improvement, the camera optical lens according further satisfies the following conditions:
-
0.43≤f2/f≤1.51; and -
0.08≤d3/TTL≤0.31; - where TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optical axis.
- As an improvement, the camera optical lens further satisfies the following conditions:
-
−13.07≤f3/f≤−2.12; -
1.64≤(R5+R6)/(R5−R6)≤7.61; and -
0.03≤d5/TTL≤0.17; - were f3 denotes a focal length of the third lens, R6 denotes a curvature radius of an image-side surface of the third lens, and TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optical axis.
- As an improvement, the camera optical lens further satisfies following conditions:
-
0.48≤f4/f≤1.85; -
0.62≤(R7+R8)/(R7−R8)≤3.25; and -
0.06≤d7/TTL≤0.24; - where f4 denotes a focal length of the fourth lens, R7 denotes a curvature radius of an object-side surface of the fourth lens, R8 denotes a curvature radius of the image-side surface of the fourth lens, and TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optical axis.
- As an improvement, the camera optical lens further satisfies following conditions:
-
−3.14≤f5/f≤−0.88; -
1.23≤(R9+R10)/(R9−R10)≤0.89; and -
0.04≤d9/TTL≤0.14; - where f5 denotes a focal length of the fifth lens, R9 denotes a curvature radius of the object-side surface of the fifth lens, R10 denotes a curvature radius of an image-side surface of the fifth lens, d9 denotes an on-axis thickness of the fifth lens, and TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optical axis.
- As an improvement, the camera optical lens further satisfies following conditions:
-
0.48≤f12/f≤2.68; - where f12 denotes a combined focal length of the first lens and second lens.
- As an improvement, the camera optical lens further satisfies following conditions:
-
TTL/IH≤0.30; - where TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optical axis, and IH denotes an image height of the camera optical lens.
- The present disclosure is advantageous in:
- compared with existing technologies, the camera optical lens in the present disclosure has good optical functions and has characteristics of large aperture, wide angle and ultra-thinness, and is especially fit for WEB camera lenses and mobile phone camera lens assemblies composed by such camera elements as CCD and CMOS for high pixels.
-
FIG. 1 is a schematic diagram of a structure of a camera optical lens according toEmbodiment 1 of the present disclosure. -
FIG. 2 is a schematic diagram of a longitudinal aberration of the camera optical lens shown inFIG. 1 . -
FIG. 3 is a schematic diagram of a lateral color of the camera optical lens shown inFIG. 1 . -
FIG. 4 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown inFIG. 1 . -
FIG. 5 is a schematic diagram of a structure of a camera optical lens according to Embodiment 2 of the present disclosure. -
FIG. 6 is a schematic diagram of a longitudinal aberration of the camera optical lens shown inFIG. 5 . -
FIG. 7 is a schematic diagram of a lateral color of the camera optical lens shown inFIG. 5 . -
FIG. 8 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown inFIG. 5 . -
FIG. 9 is a schematic diagram of a structure of a camera optical lens according to Embodiment 3 of the present disclosure. -
FIG. 10 is a schematic diagram of a longitudinal aberration of the camera optical lens shown inFIG. 9 . -
FIG. 11 is a schematic diagram of a lateral color of the camera optical lens shown inFIG. 9 . -
FIG. 12 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown inFIG. 9 . - The present disclosure will be further described below with reference to the drawings and embodiments.
- To make the objects, technical solutions, and advantages of the present disclosure clearer, embodiments of the present disclosure are described in detail with reference to accompanying drawings in the following. A person of ordinary skill in the art can understand that, in the embodiments of the present disclosure, many technical details are provided to make readers better understand the present disclosure. However, even without these technical details and any changes and modifications based on the following embodiments, technical solutions required to be protected by the present disclosure can be implemented.
- With reference to
FIGS. 1 to 4 , the present disclosure provides a cameraoptical lens 10 ofEmbodiment 1 of the present disclosure. InFIG. 1 , a left side is an object side, a right side is an image side. The cameraoptical lens 10 includes five lenses arranged coaxially, from the object side to the image side: a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5. An aperture S1 is provided at an object side of the second lens L2, and such optical element as an optical filter GF is provided between the fifth lens L5 and an image surface Si. - In this embodiment, the first lens L1 has a negative refractive power, the second lens L2 has a positive refractive power, the third lens L3 has a negative refractive power, the fourth lens L4 has a positive refractive power, and the fifth lens L5 has a negative refractive power.
- Here, a focal length of the camera
optical lens 10 is defined as f, a focal length of the first lens L1 is defined as f1, a focal length of the second lens L2 is defined as f2, an on-axis thickness of the second lens L2 is defined as d3, an on-axis distance from an image-side surface of the second lens L2 to an object-side surface of the third lens L3 is defined as d4, an on-axis thickness of the third lens L3 is defined as d5, an on-axis thickness of the fourth lens L4 is defined as d7, an on-axis distance from an image-side surface of the fourth lens L4 to an object-side surface of the fifth lens L5 is defined as d8, and a curvature radius of the object-side surface of the third lens L3 is defined as R5. Herein, f, f1, f2, d3, d4, d5, d7, d8 and R5 satisfy the following conditions: -
−1.00≤(f1+f2)/f≤−0.10 (1) -
12.00≤d3/d4≤20.00 (2) -
5.00≤R5/d5≤11.00 (3) -
8.00≤d7/d8≤14.00 (4) - Herein, condition (1) specifies a ratio between a sum of focal lengths of the first lens L1 and second lens L2 and the focal length of the camera
optical lens 10. Within the range specified by condition (1), a spherical aberration and field curvature quantity of the cameraoptical lens 10 may be effectively balanced. - Condition (2) specifies a ratio between the on-axis thickness of the second lens L2 and the on-axis distance from the image-side surface of the second lens L2 to the object-side surface of the third lens L3. Within the range specified by condition (2), it helps shortening a total optical length from an object-side surface of the first lens L1 to an image surface of the camera
optical lens 10 along an optical axis, thereby an ultra-thinness effect is realized. - Condition (3) specifies a ratio between the curvature radius of the object-side surface of the third lens L3 and the on-axis thickness of the third lens L3, within a range of which it helps improving functions of the camera
optical lens 10. - Condition (4) specifies a ratio between the on-axis thickness of the fourth lens L4 and the on-axis distance from the image-side surface of the fourth lens L4 to the object-side surface of the fifth lens L5, within a range of which it helps shortening a total optical length from the object-side surface of the first lens L1 to the image surface of the camera
optical lens 10 along the optical axis, thereby an ultra-thinness effect is realized. - In this embodiment, a curvature radius of the object-side surface of the second lens L2 is defined as R3, a curvature radius of the image-side surface of the second lens L2 is defined as R4, and the camera
optical lens 10 satisfies the following condition: -
0.05≤(R3+R4)/(R3−R4)≤0.50 (5) - Condition (5) specifies a shape of the second lens L2, within a range of which it helps soften refraction of light that passes through the lens, thereby effectively reducing aberration.
- In this embodiment, a focal length of the third lens L3 is defined as f3, a focal length of the fifth lens L5 is defined as f5, and f, f1, f3 and f5 satisfy the following condition:
-
−9.00≤(f1+f3+f5)/f≤−6.50 (6) - Condition (6) specifies a ratio between a sum of focal lengths of the first lens L1, third lens L3 and fifth lens L5 and the focal length of the camera
optical lens 10. Within the range specified by condition (6), the cameraoptical lens 10 has better imaging quality and lower sensitivity. - In this embodiment, a curvature radius of the object-side surface of the first lens L1 is defined as R1, a curvature radius of the image-side surface of the first lens L1 is defined as R2, an on-axis thickness of the first lens L1 is defined as d1, a total optical length from the object-side surface of the first lens L1 to the image surface Si of the camera
optical lens 10 along the optical axis is defined as TTL, and f1, f, R1, R2, d1 and TTL satisfy the following conditions: -
−3.71≤f1/f≤−0.76 (7) -
−0.03≤(R1+R2)/(R1−R2)≤0.67 (8) -
0.03≤d1/TTL≤0.11 (9) - Here, condition (7) specifies a ratio between the focal length of the first lens L1 and the focal length of the camera
optical lens 10, within a range of which the first lens L1 has an appropriate negative refractive power that helps reducing aberration of the cameraoptical lens 10 while facilitating a development of the cameraoptical lens 10 towards ultra-thin and wide-angle lens. - Condition (8) specifies a shape of the first lens L1, within a range of which the shape of the first lens L1 is reasonably controlled and it enables the first lens L1 to effectively correct the spherical aberration of the camera
optical lens 10. - Condition (9) specifies a ratio between the on-axis thickness of the first lens L1 and the total optical length from the object-side surface of the first lens L1 to the image surface Si of the camera
optical lens 10 along the optical axis, within a range of which it helps realizing ultra-thinness. - In this embodiment, f2, f, d3 and TTL further satisfy the following conditions:
-
0.43≤f2/f≤1.51 (10) -
0.08≤d3/TTL≤0.31 (11) - Condition (10) specifies a ratio between the focal length of the second lens L2 and the focal length of the camera
optical lens 10, within a range of which and by controlling a positive refractive power of the second lens L2 within a reasonable scope, it helps correct the aberration of the cameraoptical lens 10. - Condition (11) specifies a ratio between the on-axis thickness of the second lens L2 and the total optical length from the object-side surface of the first lens L1 to the image surface Si of the camera
optical lens 10 along the optical axis, which facilitates realizing ultra-thinness. - In this embodiment, a curvature radius of an image-side surface of the third lens L3 is defined as R6, and f3, f, R5, R6, d5 and TTL satisfy the following conditions:
-
−13.07≤f3/f≤−2.12 (12) -
1.64≤(R5+R6)/(R5−R6)≤7.61 (13) -
0.03≤d5/TTL≤0.17 (14) - Here, condition (12) specifies a ratio between the focal length of the third lens L3 and the focal length of the camera
optical lens 10, within a range of which and through reasonable distribution in refractive power the cameraoptical lens 10 has better imaging quality and lower sensitivity. - Condition (13) specifies a shape of the third lens L3, within a range of which it helps soften refraction of light that passes through the lens, thereby effectively reducing aberration.
- Condition (14) specifies a ratio between the on-axis thickness of the third lens L3 and the total optical length from the object-side surface of the
first lens L 1 to the image surface Si of the cameraoptical lens 10 along the optical axis, within a range of which it helps facilitating realizing ultra-thinness. - In this embodiment, a focal length of the fourth lens L4 is defined as f4, a curvature radius of an object-side surface of the fourth lens L4 is defined as R7, a curvature radius of the image-side surface of the fourth lens L4 is defined as R8, and f4, f, R7, R8, d7 and TTL satisfy the following conditions:
-
0.48≤f4/f≤1.85 (15) -
0.62≤(R7+R8)/(R7−R8)≤3.25 (16) -
0.06≤d7/TTL≤0.24 (17) - Here, condition (15) specifies a ratio between the focal length of the fourth lens L4 and the focal length of the camera
optical lens 10, within a range of which it helps improving functions of the cameraoptical lens 10. - Condition (16) specifies a shape of the fourth lens L4, within a range of which it helps correct such problem as off-axis aberration with the development towards ultra-thin and wide-angle lens.
- Condition (17) specifies a ratio between the on-axis thickness of the fourth lens L4 and the total optical length from the object-side surface of the first lens L1 to the image surface Si of the camera
optical lens 10 along the optical axis, within a range of which it helps realizing ultra-thinness. - In this embodiment, a curvature radius of the object-side surface of the fifth lens L5 is defined as R9, a curvature radius of an image-side surface of the fifth lens L5 is defined as R10, an on-axis thickness of the fifth lens L5 is defined as d9, and f5, f, R9, R10, d9 and TTL satisfy the following conditions:
-
−3.14≤f5/f≤−0.88 (18) -
1.23≤(R9+R10)/(R9−R10)≤0.89 (19) -
0.04≤d9/TTL≤0.14 (20) - Condition (18) specifies a ratio between the focal length of the fifth lens L5 and the focal length of the camera
optical lens 10, which effectively makes a light angle of the cameraoptical lens 10 more even, thereby reducing tolerance sensitivity. - Condition (19) specifies a shape of the fifth lens L5, within a range of which it helps correct such problem as off-axis aberration with the development towards ultra-thin and wide-angle lens.
- Condition (20) specifies a ratio between the on-axis thickness of the fifth lens L5 and the total optical length from the object-side surface of the
first lens L 1 to the image surface Si of the cameraoptical lens 10 along the optical axis, within a range of which it helps realizing ultra-thinness. - In this embodiment, a combined focal length of the first lens L1 and second lens L2 of the camera
optical lens 10 is defined as f12, and f12 and f satisfy the following condition: -
0.48≤f12/f≤2.68 (21) - Within the range specified by condition (21), it removes such problems as aberration and distortion of the camera
optical lens 10, limits a rear focal length of the cameraoptical length 10, and maintains miniaturization of a lens group of the cameraoptical lens 10. - When the focal length of the camera
optical lens 10, focal lengths and curvature radiuses of each lens satisfy the above conditions, the cameraoptical lens 10 may have good optical functions and may satisfy the design requirement of large aperture, wide angle and ultra-thinness. According to the characteristics of the cameraoptical lens 10, the cameraoptical lens 10 is especially fit for WEB camera lenses and mobile phone camera lens assemblies composed by such camera elements as CCD and CMOS for high pixels. - In this embodiment, TTL/IH≤2.30 and FOV≥119.00. Herein, TTL is a total optical length from the object-side surface of the first lens L1 to the image surface Si of the camera
optical lens 10 along the optical axis, IH is an image height of the cameraoptical lens 10 and FOV is a field of view. In this way, the cameraoptical lens 10 has good optical imaging functions while meeting design requirements of wide angle and ultra-thinness. - In the following, examples will be used to describe the camera
optical lens 10 of the present disclosure. The symbols recorded in each example will be described as follows. Besides, focal length, on-axis distance, curvature radius, on-axis thickness, total optical length, inflexion point position, and arrest point position are all in units of mm. - Preferably, inflexion points and/or arrest points can be arranged on the object-side surface and/or the image-side surface of the lens, so as to satisfy the demand for high quality imaging. The description below can be referred for specific implementations.
-
FIG. 1 is a schematic diagram of a structure of the cameraoptical lens 10 according toEmbodiment 1 of the present disclosure. The design data of the cameraoptical lens 10 illustrated inFIG. 1 are shown in the following. - Table 1 lists object-side and image-side curvature radiuses R, on-axis thicknesses of lenses, distance d between lenses, refraction indexes nd and abbe numbers vd of the first to fifth lenses L1 to L5 that form the camera
optical lens 10 inEmbodiment 1 of the present disclosure. -
TABLE 1 R d nd νd S1 ∞ d0= −0.827 R1 −2.614 d1= 0.280 nd1 1.5450 ν1 55.81 R2 2.226 d2= 0.543 R3 1.387 d3= 0.696 nd2 1.5450 ν2 55.81 R4 −1.161 d4= 0.054 R5 2.276 d5= 0.211 nd3 1.6610 ν3 20.53 R6 1.303 d6= 0.201 R7 −3.502 d7= 0.573 nd4 1.5450 ν4 55.81 R8 −0.807 d8= 0.046 R9 1.592 d9= 0.355 nd5 1.6610 ν5 20.53 R10 0.706 d10= 0.407 R11 ∞ d11= 0.210 ndg 1.5168 νg 64.17 R12 ∞ d12= 0.346 - In the table, meanings of various symbols will be described as follows.
- S1: aperture;
- R: curvature radius of an optical surface;
- R1: curvature radius of the object-side surface of the first lens L1;
- R2: curvature radius of the image-side surface of the first lens L1;
- R3: curvature radius of the object-side surface of the second lens L2;
- R4: curvature radius of the image-side surface of the second lens L2;
- R5: curvature radius of the object-side surface of the third lens L3;
- R6: curvature radius of the image-side surface of the third lens L3;
- R7: curvature radius of the object-side surface of the fourth lens L4;
- R8: curvature radius of the image-side surface of the fourth lens L4;
- R9: curvature radius of the object-side surface of the fifth lens L5;
- R10: curvature radius of the image-side surface of the fifth lens L5;
- R11: curvature radius of the object-side surface of the optical filter GF;
- R12: curvature radius of the image-side surface of the optical filter GF;
- d: on-axis thickness of a lens or on-axis distance between lenses;
- d0: on-axis distance from the aperture S1 to the object-side surface of the first lens L1;
- d1: on-axis thickness of the first lens L1;
- d2: on-axis distance from the image-side surface of the first lens L1 to the object-side surface of the second lens L2;
- d3: on-axis thickness of the second lens L2;
- d4: on-axis distance from the image-side surface of the second lens L2 to the object-side surface of the third lens L3;
- d5: on-axis thickness of the third lens L3;
- d6: on-axis distance from the image-side surface of the third lens L3 to the object-side surface of the fourth lens L4;
- d7: on-axis thickness of the fourth lens L4;
- d8: on-axis distance from the image-side surface of the fourth lens L4 to the object-side surface of the fifth lens L5;
- d9: on-axis thickness of the fifth lens L5;
- d10: on-axis distance from the image-side surface of the fifth lens L5 to the object-side surface of the sixth lens L6;
- d11: on-axis thickness of the optical filter GF;
- d12: on-axis distance from the image-side surface of the optical filter GF to the image surface Si;
- nd: refractive index of the d line;
- nd1: refractive index of the d line of the first lens L1;
- nd2: refractive index of the d line of the second lens L2;
- nd3: refractive index of the d line of the third lens L3;
- nd4: refractive index of the d line of the fourth lens L4;
- nd5: refractive index of the d line of the fifth lens L5;
- ndg: refractive index of the d line of the optical filter GF;
- vd: abbe number;
- v1: abbe number of the first lens L1;
- v2: abbe number of the second lens L2;
- v3: abbe number of the third lens L3;
- v4: abbe number of the fourth lens L4;
- v5: abbe number of the fifth lens L5;
- vg: abbe number of the optical filter GF.
-
TABLE 2 Conic coefficient Aspheric surface coefficients k A4 A6 A8 A10 R1 1.3945E+00 1.0916E+00 −2.8938E+00 7.5213E+00 −1.6013E+01 R2 7.4211E+00 1.2680E+00 3.0816E+00 −8.9854E+01 9.0147E+02 R3 −3.3839E+00 7.1046E−01 −4.1510E+01 1.3096E+03 −2.3342E+04 R4 −9.4794E−01 5.9028E−01 −4.1386E+01 7.1572E+02 −7.5013E+03 R5 7.7780E+00 2.7897E−01 −3.9977E+01 5.8766E+02 −5.3111E+03 R6 −1.2529E+00 6.5565E−01 −2.0345E+01 1.9805E+02 −1.1735E+03 R7 3.0805E+00 8.7090E−01 −3.1801E+00 −2.3892E+00 6.9772E+01 R8 −2.2649E+00 6.5716E−01 −5.3758E+00 2.2320E+01 −7.7030E+01 R9 −9.7978E+00 −5.2690E−03 −5.3854E+00 2.2353E+01 −6.2261E+01 R10 −2.3312E+00 −1.0185E+00 1.4572E+00 −1.5148E+00 1.1124E+00 Aspheric surface coefficients A12 A14 A16 A18 A20 R1 2.5333E+01 −2.8015E+01 2.0131E+01 −8.3489E+00 1.5034E+00 R2 −5.1905E+03 1.8348E+04 −3.9236E+04 4.6559E+04 −2.3616E+04 R3 2.5009E+05 −1.6505E+06 6.5653E+06 −1.4427E+07 1.3432E+07 R4 5.1278E+04 −2.2948E+05 6.4413E+05 −1.0233E+06 6.9873E+05 R5 3.1492E+04 −1.2257E+05 2.9986E+05 −4.1590E+05 2.4813E+05 R6 4.4587E+03 −1.0813E+04 1.6132E+04 −1.3461E+04 4.7988E+03 R7 −2.9457E+02 6.4955E+02 −8.3399E+02 5.9719E+02 −1.8902E+02 R8 2.1035E+02 −3.8198E+02 4.1604E+02 −2.4499E+02 6.0135E+01 R9 1.2818E+02 −1.7799E+02 1.5033E+02 −6.8565E+01 1.2880E+01 R10 −4.3030E−01 −9.8435E−02 1.9349E−01 −8.0562E−02 1.1665E−02 - In Table 2, k is a conic coefficient, and A4, A6, A8, A10, A12, A14, A16, A18 and A20 are aspheric surface coefficients.
-
y=(x 2 /R)/[1+{1−(k+1)(x 2 /R 2)}1/2]+A4x 4 +A6x 6 +A8x 8 +A10x 10 +A12x 12 +A14x 14 +A16x 16 +A18x 18 +A20x 20 - For convenience, an aspheric surface of each lens surface uses the aspheric surfaces shown in the above formula. However, the present disclosure is not limited to the aspherical polynomials form shown in the formula.
-
TABLE 3 Number(s) of Inflexion point Inflexion point inflexion points position 1position 2 P1R1 2 0.195 0.915 P1R2 1 0.625 P2R1 1 0.395 P2R2 1 0.565 P3R1 2 0.195 0.605 P3R2 1 0.425 P4R1 2 0.225 0.315 P4R2 1 0.805 P5R1 2 0.265 0.925 P5R2 2 0.345 1.355 -
TABLE 4 Number(s) of arrest points Arrest point position 1P1R1 1 0.375 P1R2 P2R1 P2R2 P3R1 1 0.345 P3R2 P4R1 P4R2 P5R1 1 0.445 P5R2 1 0.775 - Table 3 and Table 4 show design data of inflexion points and arrest points of the camera
optical lens 10 according toEmbodiment 1 of the present disclosure. P1R1 and P1R2 represent the object-side surface and the image-side surface of the first lens L1, P2R1 and P2R2 represent the object-side surface and the image-side surface of the second lens L2, P3R1 and P3R2 represent the object-side surface and the image-side surface of the third lens L3, P4R1 and P4R2 represent the object-side surface and the image-side surface of the fourth lens L4, P5R1 and P5R2 represent the object-side surface and the image-side surface of the fifth lens L5. The data in the column named “inflexion point position” refer to vertical distances from inflexion points arranged on each lens surface to the optic axis of the cameraoptical lens 10. The data in the column named “arrest point position” refer to vertical distances from arrest points arranged on each lens surface to the optical axis of the cameraoptical lens 10. - In addition, Table 13 in the following shows values corresponding to conditions in
Embodiment 1. -
FIG. 2 andFIG. 3 illustrate a longitudinal aberration and a lateral color with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm after passing the cameraoptical lens 10, respectively.FIG. 4 illustrates a field curvature and a distortion with a wavelength of 555 nm after passing the cameraoptical lens 10. A field curvature S inFIG. 4 is a field curvature in a sagittal direction, and T is a field curvature in a tangential direction. - In this embodiment, an image height of the camera
optical lens 10 is IH, a field of view is FOV, and an entrance pupil diameter is ENPD. Herein, IH=1.815 mm, a FOV in a diagonal direction is 119.40°, i.e., FOV=119.40°, and ENPD=0.650. In this way, the cameraoptical lens 10 is characterized by large aperture, ultra-thinness and wide angle, and has excellent imaging functions. -
FIG. 5 is a schematic diagram of a structure of a cameraoptical lens 20 according to Embodiment 2 of the present disclosure. Embodiment 2 is basically the same asEmbodiment 1. Symbols in the following tables having the same meanings as those inEmbodiment 1, which is not repeated, but only differences therebetween will be described in the following. - Table 5 and Table 6 show design data of a camera
optical lens 20 in Embodiment 2 of the present disclosure. -
TABLE 5 R d nd νd S1 ∞ d0= −0.621 R1 −3.315 d1= 0.277 nd1 1.5444 ν1 55.82 R2 1.277 d2= 0.340 R3 1.671 d3= 0.836 nd2 1.5444 ν2 55.82 R4 −1.249 d4= 0.044 R5 2.369 d5= 0.461 nd3 1.6610 ν3 20.53 R6 1.589 d6= 0.164 R7 −6.462 d7= 0.527 nd4 1.5444 ν4 55.82 R8 −0.704 d8= 0.065 R9 1.358 d9= 0.309 nd5 1.6610 ν5 20.53 R10 0.598 d10= 0.408 R11 ∞ d11= 0.210 ndg 1.5168 νg 64.17 R12 ∞ d12= 0.425 -
TABLE 6 Conic coefficient Aspheric surface coefficients k A4 A6 A8 A10 R1 −5.8137E+00 5.0297E−01 −9.9307E−01 1.8388E+00 −2.8105E+00 R2 3.7470E+00 6.8274E−01 6.4622E−01 −1.6140E+01 1.3181E+02 R3 −4.9642E+00 2.1719E−01 −8.1498E−01 2.2603E+01 −4.6758E+02 R4 −7.2360E−01 −1.9820E−01 −2.5284E+00 3.7134E+01 −2.8736E+02 R5 1.0152E+01 −2.7123E−01 −1.8299E+00 1.3810E+01 −4.9128E+01 R6 1.7169E+00 1.1470E−01 −2.4921E+00 1.2588E+01 −3.9603E+01 R7 4.0495E+01 3.8729E−01 −1.6526E+00 5.1825E+00 −1.1118E+01 R8 −2.2364E+00 1.6594E−01 −8.8037E−01 1.7550E+00 −1.8832E+00 R9 −1.0419E+01 −2.0292E−01 −7.4469E−01 2.3622E+00 −3.8526E+00 R10 −3.5708E+00 −4.1850E−01 5.2103E−01 −4.8584E−01 3.1444E−01 Aspheric surface coefficients A12 A14 A16 A18 A20 R1 3.1726E+00 −2.5183E+00 1.3133E+00 −3.9748E−01 5.1955E−02 R2 −6.0380E+02 1.7204E+03 −2.9942E+03 2.8497E+03 −1.0944E+03 R3 5.2892E+03 −3.3824E+04 1.2290E+05 −2.3664E+05 1.8745E+05 R4 1.4080E+03 −4.3426E+03 8.1484E+03 −8.5078E+03 3.8034E+03 R5 9.5821E+01 −8.8845E+01 2.3880E−01 5.2174E+01 −1.4790E+01 R6 8.0881E+01 −1.0727E+02 8.8971E+01 −4.1808E+01 8.4440E+00 R7 1.5955E+01 −1.4927E+01 8.6842E+00 −2.8333E+00 3.8833E−01 R8 8.4976E−01 2.6579E−01 −4.7767E−01 1.9983E−01 −2.5632E−02 R9 3.8509E+00 −2.4447E+00 9.5179E−01 −2.0439E−01 1.8598E−02 R10 −1.3860E−01 4.0394E−02 −7.4066E−03 7.6788E−04 −3.3197E−05 - Table 7 and table 8 show design data of inflexion points and arrest points of each lens of the camera
optical lens 20 lens. -
TABLE 7 Number(s) of Inflexion point Inflexion point inflexion points position 1position 2 P1R1 2 0.165 0.785 P1R2 P2R1 P2R2 1 0.515 P3R1 2 0.215 0.565 P3R2 1 0.465 P4R1 2 0.145 0.655 P4R2 1 0.755 P5R1 1 0.245 P5R2 1 0.315 -
TABLE 8 Number of Arrest point Arrest point arrest points position 1position 2 P1R1 1 0.295 P1R2 P2R1 P2R2 P3R1 1 0.415 P3R2 P4R1 2 0.315 0.755 P4R2 P5R1 1 0.435 P5R2 1 0.765 - In addition, Table 13 in the following shows values corresponding to conditions in Embodiment 2.
-
FIG. 6 andFIG. 7 illustrate a longitudinal aberration and a lateral color of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm after passing the cameraoptical lens 20.FIG. 8 illustrates a field curvature and a distortion of light with a wavelength of 555 nm after passing the cameraoptical lens 20. A field curvature S inFIG. 8 is a field curvature in a sagittal direction, and T is a field curvature in a tangential direction. - In this embodiment, an image height of the camera
optical lens 20 is IH, a field of view is FOV, and an entrance pupil diameter is ENPD. Herein, IH=1.815 mm, a FOV in a diagonal direction is 120.00°, i.e., FOV=120.00°, and ENPD=0.654. In this way, the cameraoptical lens 20 is characterized by large aperture, ultra-thinness and wide angle, and has excellent imaging functions. -
FIG. 9 is a schematic diagram of a structure of a cameraoptical lens 30 according to Embodiment 3 of the present disclosure. Embodiment 3 is basically the same asEmbodiment 1. Symbols in the following tables having the same meanings as those inEmbodiment 1, which is not repeated, but only differences therebetween will be described in the following. - Table 9 and Table 10 show design data of a camera
optical lens 30 in Embodiment 2 of the present disclosure. -
TABLE 9 R d nd νd S1 ∞ d0= −0.809 R1 −2.901 d1= 0.272 nd1 1.5450 ν1 55.81 R2 2.991 d2= 0.533 R3 2.489 d3= 0.651 nd2 1.5450 ν2 55.81 R4 −0.844 d4= 0.054 R5 2.460 d5= 0.224 nd3 1.6610 ν3 20.53 R6 1.309 d6= 0.232 R7 −1.901 d7= 0.623 nd4 1.5450 ν4 55.81 R8 −0.700 d8= 0.045 R9 1.679 d9= 0.354 nd5 1.6610 ν5 20.53 R10 0.706 d10= 0.407 R11 ∞ d11= 0.210 ndg 1.5168 νg 64.17 R12 ∞ d12= 0.300 -
TABLE 10 Conic coefficient Aspherical surface coefficients k A4 A6 A8 A10 R1 −1.2310E+00 1.1193E+00 −2.9069E+00 7.5084E+00 −1.6023E+01 R2 8.7896E+00 1.4187E+00 2.8361E+00 −8.9150E+01 9.0374E+02 R3 −4.5133E+00 8.1791E−01 −4.7101E+01 1.3425E+03 −2.3296E+04 R4 −2.8166E+00 5.7189E−01 −4.2200E+01 7.1514E+02 −7.5049E+03 R5 8.9118E+00 5.8506E−01 −4.0320E+01 5.8454E+02 −5.3049E+03 R6 −2.1103E+00 6.3280E−01 −2.0264E+01 1.9759E+02 −1.1749E+03 R7 1.7179E+00 8.6657E−01 −3.0781E+00 −2.4065E+00 6.9553E+01 R8 −1.7946E+00 6.6549E−01 −5.4380E+00 2.2209E+01 −7.7056E+01 R9 −6.5149E+00 −3.9922E−02 −5.4219E+00 2.2314E+01 −6.2283E+01 R10 −2.3445E+00 −1.0223E+00 1.4532E+00 −1.5162E+00 1.1125E+00 Aspherical surface coefficients A12 A14 A16 A18 A20 R1 2.5326E+01 −2.8007E+01 2.0141E+01 −8.3622E+00 1.5056E+00 R2 −5.1961E+03 1.8327E+04 −3.9241E+04 4.6893E+04 −2.4133E+04 R3 2.4929E+05 −1.6540E+06 6.5813E+06 −1.4280E+07 1.2835E+07 R4 5.1328E+04 −2.2930E+05 6.4337E+05 −1.0269E+06 7.0951E+05 R5 3.1530E+04 −1.2262E+05 2.9956E+05 −4.1596E+05 2.4950E+05 R6 4.4604E+03 −1.0805E+04 1.6123E+04 −1.3501E+04 4.8576E+03 R7 −2.9464E+02 6.5020E+02 −8.3362E+02 5.9652E+02 −1.8554E+02 R8 2.1033E+02 −3.8187E+02 4.1629E+02 −2.4480E+02 6.0327E+01 R9 1.2817E+02 −1.7800E+02 1.5035E+02 −6.8528E+01 1.2892E+01 R10 −4.2989E−01 −9.8172E−02 1.9361E−01 −8.0542E−02 1.1647E−02 - Table 11 and Table 12 show design data inflexion points and arrest points of the respective lenses in the camera
optical lens 30. -
TABLE 11 Number(s) of Inflexion point Inflexion point inflexion points position 1position 2 P1R1 2 0.185 0.865 P1R2 1 0.615 P2R1 1 0.305 P2R2 P3R1 1 0.205 P3R2 2 0.355 0.735 P4R1 1 0.645 P4R2 1 0.755 P5R1 2 0.265 0.915 P5R2 2 0.345 1.315 -
TABLE 12 Number of arrest points Arrest point position 1P1R1 1 0.335 P1R2 P2R1 P2R2 P3R1 1 0.365 P3R2 1 0.625 P4R1 1 0.765 P4R2 P5R1 1 0.435 P5R2 1 0.765 - In addition, Table 13 in the following shows values corresponding to conditions in Embodiment 3.
-
FIG. 10 andFIG. 11 illustrate a longitudinal aberration and a lateral color of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm after passing the cameraoptical lens 30.FIG. 12 illustrates a field curvature and a distortion of light with a wavelength of 555 nm after passing the cameraoptical lens 30. A field curvature S inFIG. 12 is a field curvature in a sagittal direction, and T is a field curvature in a tangential direction. - In this embodiment, an image height of the camera
optical lens 30 is IH, a field of view is FOV, and an entrance pupil diameter is ENPD. Herein, IH=1.815 mm, a FOV in a diagonal direction is 119.80°, i.e., FOV=119.80°, and ENPD=0.643. In this way, the cameraoptical lens 30 is characterized by large aperture, ultra-thinness and wide angle, and has excellent imaging functions. - Table 13 in the following lists equivalent parameters in
Embodiment 1, Embodiment 2 and Embodiment 3 in accordance with the above conditions and values of conditions (1), (2), (3) and (4). -
TABLE 13 Parameters and Embodi- Embodi- Embodi- conditions ment 1 ment 2 ment 3 Notes (f1 + f2)/f −0.61 −0.14 −0.99 Condition (1) d3/d4 12.89 19.00 12.06 Condition (2) R5/d5 10.79 5.14 10.98 Condition (3) d7/d8 12.46 8.11 13.84 Condition (4) f 1.442 1.451 1.429 f1 −2.155 −1.653 −2.650 f2 1.279 1.456 1.238 f3 −5.000 −9.482 −4.551 f4 1.783 1.402 1.711 f5 −2.263 −1.911 −2.136 FNO 2.218 2.219 2.222 - Those skilled in the art should appreciate that the aforementioned embodiments are specific embodiments for implementing the present invention. In practice, however, many changes can be made in the forms and details of the specific embodiments without departing from the spirit and scope of the invention.
Claims (10)
−1.00≤(f1+f2)/f≤−0.10;
12.00≤d3/d4≤20.00;
5.00≤R5/d5≤11.00; and
8.00≤d7/d8≤14.00;
0.05≤(R3+R4)/(R3−R4)≤0.50;
−9.00≤(f1+f3+f5)/f≤−6.50;
−3.71≤f1/f≤−0.76;
−0.03≤(R1+R2)/(R1−R2)≤0.67;
0.03≤d1/TTL≤0.11;
0.43≤f2/f≤1.51; and
0.08≤d3/TTL≤0.31;
−13.07≤f3/f≤−2.12;
1.64≤(R5+R6)/(R5−R6)≤7.61; and
0.03≤d5/TTL≤0.17;
0.48≤f4/f≤1.85;
0.62≤(R7+R8)/(R7−R8)≤3.25; and
0.06≤d7/TTL≤0.24;
−3.14≤f5/f≤−0.88;
1.23≤(R9+R10)/(R9−R10)≤3.89; and
0.04≤d9/TTL≤0.14;
0.48≤f12/f≤2.68;
TTL/IH≤2.30;
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